Wifi module able to share ethernet connection? Connection is unstable!

[vigor]

I've figured out Access Point mode (mostly followed this post https://help.ubuntu.com/community/WifiDo...ccessPoint)
it is visible from iPhones, Androids, MacBook, I have not tested actual communication yet, but i do see AP in the air and can connect to it
OS image is xubuntu longsleep , WiFi card ordered from pine64 kickstarter

my /etc/hostapd/hostapd.conf contains this
auth_algs=1
beacon_int=50
channel=3
country_code=US
disassoc_low_ack=1
driver=nl80211
hw_mode=g
ht_capab=[HT40+][HT40-][SHORT-GI-40]
ieee80211d=1
ieee80211n=1
interface=wlan1
require_ht=0
rsn_pairwise=CCMP
ssid=myaccesspointname
wmm_enabled=1
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_passphrase=0123456789